81733432337 has 8 divisors (see below), whose sum is σ = 86636293632. Its totient is φ = 76841128000.

The previous prime is 81733432331. The next prime is 81733432357. The reversal of 81733432337 is 73323433718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81733432337 - 2⁴ = 81733432321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81733432331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2623289 + ... + 2654262.

It is an arithmetic number, because the mean of its divisors is an integer number (10829536704).

Almost surely, 2^81733432337 is an apocalyptic number.

It is an amenable number.

81733432337 is a deficient number, since it is larger than the sum of its proper divisors (4902861295).

81733432337 is a wasteful number, since it uses less digits than its factorization.

81733432337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278479.

The product of its digits is 762048, while the sum is 44.

The spelling of 81733432337 in words is "eighty-one billion, seven hundred thirty-three million, four hundred thirty-two thousand, three hundred thirty-seven".